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Finding the Fourth Proportional to 444,656.79, 666,986.10 and 208,165.55

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Solution

The fourth proportional to 444,656.79, 666,986.10 and 208,165.55 is: 312,248.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,656.79 : 666,986.10 = 208,165.55 : x
  2. Step 2: Convert to fraction form
    444,656.79/666,986.10 = 208,165.55/x
  3. Step 3: Cross multiply
    444,656.79x = 666,986.10 × 208,165.55
  4. Step 4: Simplify right side
    444,656.79x = 138,843,524,233.30
  5. Step 5: Solve for x
    x = 138,843,524,233.30/444,656.79
  6. Step 6: Final answer
    x = 312,248.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.